66 citations · 172 across the 9 of their papers we have counts for
5 papers · 1 filter
The time-energy certainty relation
Zbyszek P. Karkuszewski
All energy measurements of a quantum system are prone to inaccuracies. In particular, if such measurements are carried over a finite period of time the accuracy of the result is af…
Spectral analysis of short time signals
Zbyszek P. Karkuszewski
The very old problem of extracting frequencies from time signals is addressed in the case of signals that are very short as compared to their intrinsic time scales. The solution of…
Harmonic inversion helps to beat time-energy uncertainty relations
Zbyszek P. Karkuszewski
It is impossible to obtain accurate frequencies from time signals of a very short duration. This is a common believe among contemporary physicists. Here I present a practical way o…
Simple method for excitation of a Bose-Einstein condensate
Bogdan Damski, Zbyszek P. Karkuszewski, Krzysztof Sacha +1
An appropriate, time-dependent modification of the trapping potential may be sufficient to create effectively collective excitations in a cold atom Bose-Einstein condensate. The pr…
A method for collective excitation of Bose-Einstein condensate
Zbyszek P. Karkuszewski, Krzysztof Sacha, Jakub Zakrzewski
It is shown that by an appropriate modification of the trapping potential one may create collective excitation in cold atom Bose-Einstein condensate. The proposed method is complem…